All the sampling methods used in the given survey are; convenience, systematic, and voluntary sampling.
What is the sampling method used?From the question, we see that the surveyor selects the twentieth student who enters the building.
Now, the student do not enter the building to be surveyed but instead for other reasons and as such the researcher takes advantage of that and selects them. This is a form of convenience sampling.
It is also a form of systematic sampling because the researcher selects every twentieth student and not any other.
Lastly, it is a form of Voluntary sampling because the students selected to participate in the survey are free to choose whether to participate in the survey or not.
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Answer:
B, E, and F.
Explanation:
B. convenience
E. systematic
F. voluntary
In triangle $abc,$ angle bisectors $\overline{ad},$ $\overline{be},$ and $\overline{cf}$ meet at $i.$ if $di = 3,$ $bd = 4,$ and $bi = 5,$ then compute the area of triangle $abc.$
∆BDI is necessarily a right triangle, since the squares of the two smaller sides is exactly the square of the longest side.
3² + 4² = 9 + 16 = 25 = 5²
Then the angle bisector AD forms a right angle with the base BC - this means AD is an altitude of ∆ABC.
Since AD bisects the angle at vertex A, we further know that ∆ABC is isosceles, since both ∆ABD and ∆ACD are right triangles with the same height AD. Then the length of BC is twice the length of BD, and ∆ABC has a base of length 8.
Let θ be the measure of one of the base angles of ∆ABC (angle ABC, for instance). Then in ∆BDI, we have the trigonometric relationship
tan(θ/2) = 3/4
from which we get
θ/2 = arctan(3/4)
θ = 2 arctan(3/4) ≈ 73.74°
Then the height of ∆ABC is
tan(θ) = AD/4
AD = 4 tan(θ)
AD = 4 tan(2 arctan(3/4))
AD = 4 • 2 tan(arctan(3/4)) / (1 - tan²(arctan(3/4)))
AD = 4 • 2 • 3/4 / (1 - 9/16) = 96/7
Then the area of ∆ABC is
1/2 • 8 • 96/7 = 384/7
According to mla guidelines, what is the best way to use this sentence in her essay without plagiarizing?
Fill in the blank with the correct subjunctive form of the verb in parentheses. nosotros ____ (vivir)
Answer:
I am assuming vivimos
Explanation:
if it is ending in os its conjuction would imos
Julia wants to be sure that she can listen effectively to the speaker at the town hall meeting. which strategy will help her succeed?jumping to conclusionsmulti-tasking during the speechprejudging the speakerresearching the topic in advance
Answer:
On Edge2022: Researching the topic in advance
Explanation:
Speaker researching the topic in advance is the best strategy that will help to succeed Julia. Option D is correct.
Why it is important to research the topic in advance?The advancement of humanity is fueled by research. Curiosity is what drives it; when we get interested, we start asking questions and engrossing ourselves in learning everything there is to know.
Education is booming. Without curiosity and inquiry, development would stall, and life as we know it today would be entirely different. Unknowns can be resolved through research, which closes knowledge gaps and modifies how healthcare personnel operate.
Therefore, option D is correct.
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The american government has set a standard for advancing the cause of human rights since the end of the cold war. what difficulty does the united states face in the future as it seeks to secure human rights in a global community?
The difficulty that the united states face in the future as it seeks to secure human rights in a global community are; as itemized below.
What is the position on Human rights?A fundamental human right is a right which all humans have been given and which no man can take away.
Some examples of fundamental human rights include;
The right to life and liberty.Freedom from slavery and torture.Freedom of opinion and expression.The right to work and education.Now, the challenges of human rights are;
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Sweat on the surface of skin works as a cooling system because the liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates. the gases from the surrounding air deposit more water on the surface of the skin, cooling it in the process. sweat deposits salt on the skin. sweat transfers heat to the skin.
Sweat on the surface of skin works as a cooling system because the liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.
Why does sweating have a cooling effect?The cooling effect on a body via sweating depends on a principle of physics known to be "heat of vaporization."
This is where it uses energy to evaporate sweat off of your skin and excess body heat is used to convert sweat into vapor and a person start to cool down.
Therefore, Sweat on the surface of skin works as a cooling system because the liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.
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Answer:
Its A.
Explanation:
Edge, IM TIRED OF THIS!!
Cooper went into the grocery store at 4:40 p.m. he left the store at 5:13 p.m. how long was cooper inside the grocery store?
Answer:
33 minutes
Explanation:
So, Copper went into the store at 4:40 p.m. then came out at 5:13 p.m.
One way to visualize this is to first count the minutes to 5:00 p.m. and then add the minutes after that. So, there is 20 minutes till 5:00 p.m., and then 13 minutes until 5:13 p.m. 20 + 13 = 33 minutes. This makes it easier to see how long Copper took in the store.
Hope this helps!! If you have any questions about my work, please let me know in the comments!
Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.
The true statement about the causation between the variables it is a weak negative correlation, and it is not likely causal.
What is causation between the variables?The causation between the variables shows that the occurrence of one event causes the occurrence of the other.
The informal relationship between two events.
Thus, the correct option is A, it is a weak negative correlation, and it is not likely causal.
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Which agile framework breaks the workload into smaller increments to improve team focus and simplify testing?.
Scrum is the agile framework that breaks the workload into smaller increments to improve team focus and simplify testing.
What is an Agile framework?An agile framework may be defined as a detailed technique for planning, managing, and accomplishing any task in a precise manner. It is conceived for teams and to support organizations' practices.
The complete question is as follows:
Design ThinkingScrumWaterfallDevOpsI don't know this yet.Scrum is represented as a framework that supports team members to work together in a specific environment. It exploits the concept of devising the team to learn through experiences, self-organizing, and deliberating on the profits and flops in a team concurrently.
Therefore, it is well described above.
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Stiff muscles only result from overworking them. please select the best answer from the choices provided. t f
Answer:
false
Explanation:
I think it’s false because sometimes at school I get tired in my arms because I’m probably not getting enough exercise. This is why I think it’s false.
Answer:
F
Explanation:
What are shelters made of in urban shantytowns in paraguay? go to housing brick fiberglass cement carboard and tin
Answer: it is made out of cement and bricks
Explanation: I just did this
Answer: The answer is cardboard and tin.
ENJOY!!!:)
Mai bought a wedge with a central angle of 45 degrees and radius 10 centimeters. what is the area of the top surface of this wedge?
The area of the top surface of wedge shaped cheeses bought by Mai is; 39.3 cm².
How to find the area of a Circular Sector?The area of a circular sector is the total space occupied by it. The sector area is half of the product of the square of radius of the circle and the central angle.
It can be calculated if θ is measure in degree as;
A = πr²θ/360
We are given;
Radius; r = 10 cm
Central Angle; θ = 45°
Thus;
A = π(10)² * 45/360
A ≈ 39.3 cm²
Thus, the area of the top surface of wedge shaped cheeses bought by Mai is 39.3 cm².
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Identify and explain at least one inner conflict encountered by huck in chapters 14-16. use at least 50 words and include a specific example.
The example of inner conflict encountered by Huck in chapters 16 is that His conscience troubles.
What is Huck's internal conflict in Chapter 16 about?In Chapter 16, it tells that Huck's conscience troubles him a lot in the case of Him helping Jim escape from his “original owner,”
He knows what Miss Watson has done for Him and as such, this made him to have inner conflict.
Therefore, The example of inner conflict encountered by Huck in chapters 16 is that His conscience troubles.
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I need help with this question anybody know it?
Julio's aptitude assessment revealed that his natural talent for music. Also, his personality inventory reveals he's friendly while his interest inventory showed he likes to be outdoors.
What is self-assessment test?A self-assessment test can be defined as a type of test through which an individual gathers information himself or herself, so as to enable him or her identify the elements that can be improved upon or exploited, as well as make an informed decision towards achieving a predefined goal.
Based on the self-assessment tests completed by Julio, his aptitude assessment revealed that he has a natural talent for music. Also, his personality inventory reveals he's friendly while his interest inventory showed he really likes to be outdoors and around people.
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Complete Question:
Julio completed a series of self-assessment tests in his career explorations class. His ______ assessment revealed that he has a natural talent for music. His _____ inventory said that he is friendly, and his _____ inventory said that he really likes to be outdoors and around people.
One effect of the underlined text is to the squatter and the don
One effect of the underlined text is that it shows how Victoriano's insensitivity to Clarence's obvious discomfort.
What is the effect of a thing?The effect on something or someone, it known to be one that alters or influences that thing or changes the person in some way.
Therefore, One effect of the underlined text is that it shows how Victoriano's insensitivity to Clarence's obvious discomfort.
See options below
One effect of the underlined text is to
A. show Victoriano's insensitivity to Clarence's obvious discomfort.
B.create conflict between Victoriano and Clarence about how to approach Don Mariano.
C.foreshadow that there will be conflict between Clarence and his father.
D.hint that everything will be settled without drama or misunderstandings
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You have been assigned to research edgar allen poe. your teacher is very clear that your speech should focus on why he is important to american literature. choose the list of things you should remember to include in developing your poe speech. a. presentation aids, step by step explanation b. aids, an overview c. variety of definitions, several credible sources d. journalistic questions, sensory description, please select the best answer from the choices provided a b c d
The list of things you should remember to include in developing your poe speech are; variety of definitions, several credible sources
What are the useful tools in developing a speech?Speech is the formal disclosure of thoughts to the audience. This includes an introduction, body, and conclusion. The speech must include a clear message, context, interference, and feedback.
To prepare a speech on Poe, we must use several credible sources to generate information and data about him and his work in that regards and use a variety of definitions as his importance in American literature.
Thus, the correct option is Option C, variety of definitions, several credible sources.
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Fill in the blank with the correct form of the present perfect tense. los hombres ____________________ por muchas horas en el mar. han pescado hayan pescado tienen pescado han pescando
The correct form of the present perfect tense. los hombres han pescado por muchas horas en el mar.
What is the terms about?The Spanish terms "The correct form of the present perfect tense. los hombres han pescado por muchas horas en el mar. " is known to be:
The correct form of the present perfect tense. men have fished for many hours in the sea and thus this is the correct terms.
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Answer: han pescado
Explanation:
One activist who lobbied successfully to pass the agricultural labor relations act of 1975 was brainly
One activist who lobbied successfully to pass the agricultural labor relations act of 1975 was Dolores Huerta.
Which of the subsequent changed into a end result of the rural revolution?Many small farmers have become tenant farmers or moved to cities, enclosures have become landmarks of rich landowners, and landowners experimented with new agricultural methods.
Dolores Huerta changed into additionally instrumental withinside the enactment of the Agricultural Labor Relations Act of 1975. This changed into the primary regulation of its type withinside the United States, granting farm workers in California the proper to together arrange and a good buy for higher wages and operating conditions.
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The lengths of a particular snake are approximately normally distributed with a given mean = 15 in. and standard deviation = 0.8 in. what percentage of the snakes are longer than 16.6 in.? 0.3% 2.5% 3.5% 5%
Answer: The answer would be 5%
Explanation:
The closest answer choice is 2.5%, which is the closest value to 1.7% given in the answer choices.
What is z-score?The Z-score is a statistical measure that describes the relationship of a value to the mean of a group of values.
To solve this problem, we can use the standard normal distribution and the z-score formula:
z = (x - μ) / σ
Where x is the value we want to find the probability for, μ is the mean of the distribution, and σ is the standard deviation of the distribution.
In this case, we want to find the percentage of snakes that are longer than 16.6 in., which corresponds to a z-score of:
z = (16.6 - 15) / 0.8 = 2.125
Using a standard normal distribution table or calculator, we can find that the percentage of values in the distribution that are greater than a z-score of 2.125 is approximately 1.7%. Therefore, approximately 1.7% of snakes are longer than 16.6 in.
Thus, the probable answer is 2.5%.
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ive been vitrual and have not been seeing whats been going on
Answer:
They are distributed unevenly as it appears that there is slightly more soil than coal reserves.
From previous experience, the owner of an apple orchard knows that the mean weight of gala apples is 140 grams. there has been more precipitation than usual this year. the owner believes the weights of the apples will be heavier than usual and therefore the crop will be more profitable. this will allow the owner to expand the orchard. the owner takes a random sample of 30 apples and records their mean weight. what is the consequence of a type i error in this situation?
The consequence of a type I error in this situation is that the owner believes the crop will be more profitable and expands the apple orchard.
What is a type I error?
A type I error can be defined as a type of error that occurs when the null hypothesis is rejected, even though it's actually true.
This ultimately implies that, a type I error concludes that a given result is statistically significant, whereas, in reality, it was due to luck, chance or other unrelated factors.
In this scenario, the consequence of a type I error in this situation is that the owner believes the crop will be more profitable and expands the apple orchard, when the true mean weight of the apples is actually lesser than 140 grams.
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A toy manufacturer wants to see how long, on average, a new toy captures children's attention. he tests children selected at random and finds that their mean attention span is minutes with a standard deviation of minutes. if we assume that attention spans are normally distributed, find a confidence interval for the mean attention span of children playing with this new toy. then find the lower limit and upper limit of the confidence interval.
carry your intermediate computations to at least three decimal places. round your answers to one decimal place. (if necessary, consult a list of formulas.)
lower limit:
upper limit:
Answer: Lower CI=21-t(0.025, 16)*7/sqrt(17)=21-2.12*7/sqrt(17)=17.4
upper CI=21+t(0.025, 16)*7/sqrt(17)=21+2.12*7/sqrt(17)=24.6
Explanation: Because there both close and equal
Which of the following are peripheral devices that could be connected to the computer you are using?
Web camera
Mouse
Keyboard
Graphics card
Answer:
i think web camera
Explanation:
Answer: It would be Web, Camera, Mouse, Keyboard, Graphics card so it's all of them
Explanation:
If 5.37 grams of sucrose, c12h22o11, are dissolved in 21.2 grams of water, what will be the boiling point of the resulting solution? (kb for water = 0.512 oc/m).
Answer:
c
Explanation:
The percentage decrease in mass is used to compare the results explain why
The percentage decrease is used because the difference in mass does not deal with the proportional aspect of the solutions whereas the percent is calculated to give an exact difference, including the quantities of solution.
What is the percentage decrease in mass?Percentage decrease in mass simply means the percentage by which the mass of a substance was decreased in chemistry.
Now, the difference in mass is sometimes useful but then it does not deal with the proportional aspect of the solutions, which makes the results less accurate.
The percentage decrease in mass is usually calculated to give an exact difference while inspecting the quantities of solution.
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The work of which scientist help to explain lights ability to propagate through a vacuum
Answer: the answer is maxwell
Lisa has collected data to find that the number of pages per book on a book shelf has a normal distribution. what is the probability that a randomly selected book has fewer than 141 pages if the mean is 193 pages and the standard deviation is 26 pages? use the empirical rule. enter your answer as a percent rounded to two decimal places if necessary.
Rounding to two decimal places, the probability that a randomly chosen book contains fewer than 141 pages is about 2.5%.
What amount of money has Lisa amassed in the past six months that is 15% greater than 1,250?If you tell us that you have saved 15% of your income plus $1,250, we must first divide that amount by 15% to arrive at 187.5, and then we must add that figure to $1,250 to arrive at 1,437, which is Lisa's money.
In this issue, our goal is to determine the likelihood that a randomly chosen book contains fewer than 141 pages.
Where x is the value we're interested in (141 pages), is the mean (193 pages), and is the standard deviation, we get the equation z = (x - ) /. z = (141 - 193) / 26 = -2
The z-score informs us of how many standard deviations our value deviates from the mean. 141 pages in this case are two standard deviations away from the mean.
We may estimate that 95% of the data falls within two standard deviations of the mean using the empirical method. We can estimate that P(X 141) 2.5% is the likelihood of choosing a book with fewer than 141 pages.
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Tamara is building braces for a shelf. she will attach each brace to the front edge of the 6-inch shelf and 3 inches down the wall. if she uses 3 braces for the shelf, which measurement is closest to the amount of bracing she will need in inches?
The measurement that is closest to the amount of bracing she will need in inches is 6.7 inches.
Measurement that is closest to the amountUsing Pythagorean theorem for
Let x represent the measurement
Hence
x=√3²+6²
x=√9+36
x=√45
x=6.708
x=6.7 inches (Approximately)
Therefore the measurement that is closest to the amount of bracing she will need in inches is 6.7 inches.
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This part of a letter is called the heading. salutation. body. closing.
Based on the excerpt, this part of a letter is called the: C. body.
What are the parts of a letter?Generally, there are four (4) main parts of a letter and these include the following:
HeadingSalutationBodyClosingIn English literature, the body of a letter comprises a detailed information about the subject matter or topic being discussed.
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Complete Question:
Read part of a letter
I believe our school should promote Earth Day
activities. We could encourage efforts to walk to school,
and we could dedicate the afternoon to tending our
school grounds.
This part of a letter is called the? heading. salutation. body. closing.
Answer:
c body
Explanation:Good luck
7. Based on Scientist 1's explanation, a rock trail that is
33 cm wide was most likely made by a rock with
approximately what width?
A. 10 cm
B. 25 cm
C. 50 cm
D. 65 cm
Please explain how you got your answer :)
Rock trails are the passages and paths that are made by rocks of different sizes in a region. A rock trail with 33 cm wideness is made of 50 cm wide rock. Thus, option C is correct.
What is wideness?Wideness is the measure of the broad and the breadth and is the measure of the unit of length or the height.
According to the scientist 1, the rock trail left by the rock is 2/3 so the width of the rock is given as,
3/2 × 33 = 49.5 cm
Therefore, 50 cm is the width.
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